[Mgs] MGB was TD wheels, tires and things

Barrie Robinson barrie at look.ca
Thu Jul 14 11:29:32 MDT 2011


Paul,

It seems I am fortunate in this backwater where they still use the 
old fashioned way - no fancy equipment !


At 03:57 AM 7/14/2011, Paul Hunt wrote:
>Can't speak for the TD but on the MGB the critical thing is how the 
>wheel is mounted on the balancer shaft.  Normally they mount the 
>back of the wheel against a flat surface and put a cone through the 
>centre hole.  That's fine for modern wheels as the centre hole is 
>designed for that purpose, whereas on MGB stud wheels it's just a 
>hole that was punched through to make space for the hub nut without 
>much consideration for concentricity or roundness. It's bad enough 
>with those, but on wire wheels neither of the machined tapered 
>mounting surfaces are being used, and I've had tyre places point out 
>a massive wobble with the wheel on their machine that isn't there on 
>the hub.  I've had a pair of cones machined 
>(http://www.mgb-stuff.org.uk/MGBCones.exe) that support the wheel 
>both sides - on the inside taper at the back of the wheel and the 
>outside taper at the front which has solved the problem for the wire 
>wheels, and I have a hub waiting to be machined so I can mount my V8 
>wheel by the studs.  However it does need the agreement of the tyre 
>place to use them.  I have done some tests at my tyre place and 
>found that their standard cone when used on the back of the wheel 
>gives the same balance results as the machined cone even though the 
>standard cone has a different taper and so holds the wheel on the 
>edge of its taper instead of its flat, so potentially you only need 
>the outer cone.  YMMV.
>
>PaulH.
>
>----- Original Message -----
>>You think that's frustrating, try wire wheels.
>>
>>Most shops can't balance them at all -- they would wind up putting 20
>>weights around the rim and they would still vibrate.
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Regards

Barrie
barrie at look.ca
705-721-9060 


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